MSP432E401Y: Error connecting to the target: (Error -1170 @ 0x0) Unable to access the DAP

Hi Sean,

There is a related thread with some proposed solutions here:

https://e2e.ti.com/support/microcontrollers/msp430/f/166/t/434709?MSP432-Launchpad-Error-connecting-to-the-target-Error-1170

Are you able to factory reset the board?

BR,
Leo

Hi Leonardo,

This is a new chip that came from the factory that was placed in a custom board.  I'm getting these errors at the very initial attempt to download the code.  In fact I've tried a second chip on a second duplicate board and the same problem exists.

Do you think a factory reset should still be performed? 

Thanks.

Hi Leonardo,

I am also experiencing the same problem. The JTAG interface test to be fine however I get the same error message. This is occurring on two different boards both using MSP432E401Y. I have 2 of the XDS110 Debuggers, and both work on the MSP-EXP432E401Y board, but don't connect on the new boards. The design of the new boards is nearly a copy of the MSP-EXP432E401Y board with out the crystals. By the way I have gone through the procedure of connecting to the DAP manually, however could not find the script to do a factory reset for this part. Maybe I am missing something?

Kevin

Hi Kevin, Sean,

There is another related thread here which suggests reducing the clock of the XDS might help:

https://e2e.ti.com/support/microcontrollers/msp430/f/166/p/431831/1567672#1567672

In order to conduct a factory reset, you should refer to the instructions in section 8 of this document:

https://www.ti.com/lit/ug/slau575k/slau575k.pdf

When you run the MSP-EXP432E401Y without the crystals, do you see the same issue?

BR,
Leo

Hi Leonardo,

I've tried switching the clock rate to 100kHz from the default 2.5MHz which still exhibits the same behavior.

Thanks,

Sean

Hi Leonardo,

Apparently the issue on my boards was the clock was assumed to be generated by a crystal as is done on the MSP-EXP432E401Y. Although I don't believe it ever connected I cannot say that for certainty. I do know that since I connected a clock source to the OSC pin, the board and system have been working fine. Thanks for your assistance. Next time I develop code without a crystal, I will be careful to write the initialization that way.

Kevin